April 1971

April 1971: 276 companies

1 April 1971 10 companies

2 April 1971 14 companies

5 April 1971 10 companies

6 April 1971 11 companies

7 April 1971 12 companies

8 April 1971 20 companies

13 April 1971 8 companies

14 April 1971 8 companies

15 April 1971 15 companies

16 April 1971 23 companies

19 April 1971 14 companies

20 April 1971 8 companies

21 April 1971 8 companies

22 April 1971 9 companies

23 April 1971 12 companies

24 April 1971 1 companies

27 April 1971 16 companies

28 April 1971 18 companies

29 April 1971 24 companies

30 April 1971 35 companies